Find flights
When to book
FAQs

Cheap flights from Rennes to Southampton from £260

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
RNS — SOU
1 Jun — 8 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Rennes to Southampton

Enter your travel dates to find the best prices.

Cheapest flights from Rennes to Southampton
Explore the most affordable flight options available from Rennes to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 May 2026.

Fri 15/514:25
RNS
-
SOU
1 stop19h 20m
KLM
Tue 19/517:20
SOU
-
RNS
2 stops40h 00m
KLM
Deal found 29/4£260
Tue 26/514:30
RNS
-
SOU
1 stop19h 05m
KLM
Thu 28/517:20
SOU
-
RNS
2 stops40h 00m
KLM
Deal found 1/5£341
Tue 26/518:00
RNS
-
SOU
2 stops22h 00m
Multiple Airlines
Thu 28/517:20
SOU
-
RNS
2 stops40h 00m
Multiple Airlines
Deal found 1/5£343
Sat 13/617:20
RNS
-
SOU
1 stop16h 25m
Multiple Airlines
Sat 20/618:10
SOU
-
RNS
2 stops20h 30m
Multiple Airlines
Deal found 29/4£357
Sat 13/617:20
RNS
-
SOU
1 stop16h 25m
KLM
Sat 20/617:20
SOU
-
RNS
1 stop19h 35m
KLM
Deal found 29/4£369

Find flight deals from Rennes to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Rennes (RNS) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 2 May 2026.

Round-trip from

£260

Popular in

August

Cheapest in

January

Average price

£135
KLM
  • KLM
  • 15/5-19/5
  • 3 total stops
  • 59h 20m total
  • Rennes to Southampton
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£12 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Rennes to Southampton that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 2 May 2026.
Use the filters below to find and compare flights from Rennes to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

RennesSouthampton

RNS - SOU

RNSSOU

Rennes St Jacques

Tue 26/5

14:30-08:35

1 stop19h 05m

Southampton Eastleigh

Thu 28/5

17:20-10:20

2 stops40h 00m

£341

RennesSouthampton

RNS - SOU

RNSSOU

Rennes St Jacques

Tue 26/5

18:00-15:00

2 stops22h 00m

Southampton Eastleigh

Thu 28/5

17:20-10:20

2 stops40h 00m

£343
Fastest return journey

RennesSouthampton

RNS - SOU

RNSSOU

Rennes St Jacques

Sat 13/6

13:35-08:45

2 stops20h 10m

Southampton Eastleigh

Sat 20/6

18:10-15:40

2 stops20h 30m

£365

RennesSouthampton

RNS - SOU

RNSSOU

Rennes St Jacques

Fri 15/5

11:05-07:20

3 stops21h 15m

Southampton Eastleigh

Tue 19/5

18:10-14:50

2 stops19h 40m

£409

Flights are sorted by cheapest return flights first.

Deals found on 1/5

Sorted by cheapest first

Best time to book a flight from Rennes to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Rennes with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Rennes to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Rennes to Southampton?

    For as low as £341, KLM can have you in Southampton from Rennes in 19h 05m. Rennes and Southampton are separated by a distance of 200 mi.

  • Can I find deals for flights from Rennes to Southampton that include hotel bookings?

    Yes. In addition to deals on Rennes to Southampton flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Rennes to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rennes to Southampton.

  • Can I find deals for business class flights from Rennes to Southampton?

    Yes. Cheapflights offers flight deals from Rennes to Southampton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Rennes to Southampton?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Rennes to Southampton. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Rennes to Southampton?

Cheapflights helps you find that perfect flight to Southampton from Rennes by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Rennes to Southampton with no change fees?

Certainly. Search results for flights to Southampton from Rennes shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Rennes to Southampton become cheaper?

Yes! Start tracking prices for Rennes to Southampton flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.